Wrench.



F. R. ALLEN.

,WRENGIL APPLICATION HLED mm1?, 1912.

L l 24, l 91 Patented 3311.5, 1915.

FM /men/ l alllldiNl @lllldlllGEp FRED R. ALLEN, F PROVIDENCE, RHGDE ISLLND, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, 'TO ALLEN WEE-N011 t TGOL COMPNY, OF PRSVIDENCE, RHODE ISLAND, A CORPORATION GF .RHODE ISLAND.

VRENCH.

Specification of Letters Patent.

maaier.

Application led October 17, 1912.

To all 'whom it may concern Be it known that I, FRED R. ALLEN, a citizen of the United States, and resident of the city of Providence, in the county of Providence and State of Rhode lsland,have invented certain new and useful improvements in vVrenches, of which the :following is a specication.

This invention relates to wrenches and has for its object to provide a wrench with a friction step by step action to take the place oil the toothed ratchet type of wrench, the same being adapted for use in operate ing bolts, nuts, drills, etc., and is an improvement on the construction covered by my prior Patent No. 1,000,878.

A further object of my present invention is to provide simple and effective means whereby the action ot the wrench may be readily reversed by simply removing the operating handle and reversing or turning the same over side for side, whereby the cam portion of the handle is caused to act upon the friction surface of the work-operating member to rotate the same in the opposite direction upon a reciprocating inotion of the handle.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully de scribed and particularly pointed out in the appended claims.

Of the accompanying drawings: Figure 1 is a side elevation of my improved wrench, partially in section. Fig. 2- is a perspective view showing the keeper in detail. Fig. 3 is a perspective view showing a portion of the operating handle removed. l `ig. 4- is a perspective view showing the hardened friction collar with which the cam portion of the operating lever coacts to rotate the work engaging member. Fig. 5- is a side elevation, partly in section, illustrating my improved wrench as applied to a drill.

Referring to the drawings, 10 designates the keeper which may be construct-ed in any desired shape but whose body portion is preferably made substantially in the form of a ring having a pair of spaced apart laterally extending ears 11 and 12 between which the operating handle 13 is designed Patented Jan. 5, 1915. Serial No. 726,215.

to iit and oscillate on the pivot pin 14 which extends through the holes 15 in the ears and the hole 21 in the handle, a loosely threaded nut 82 is shown for holding this pin in position, but any suitable readily releasable means may be employed for this purpose. The space 16 between these ears extends through and communicates with the central opening 17 through the ring. The outer edges of these ears are oppositely notched as at 18 and 19 respectively, see Fig. 2, to loosely receive the .laterally extending stop pin 2O in the handle when turned in either 01"' its two positions and permit a slight relative movement of said handle. rlhe pivoted end ot' this operating handle 18 is provided with an engaging friction cam surface 81. A hardened ring or collar 22 is rotatably mounted within the keeper 10 to provide a suitable surface against which the cam end of the lever may work.

1n applying my improved wrench to a drill oli the construction illustrated in Fig. 5, l preferably secure this hardened ring 22, by means of keys 23, to the shank portion or operating member 21 of the drill, the same resting upon a fixed shoulder 25, and retained in position on said member by an adjustable collar 26 held in position by the set screw 2T. rlhe drill ci is shown as being retainedl in a socket in the lower end of this member for engaging the work b below. rlhe upper end of this operating member is shown as being provided with a. hand operable screw take-up member 28, whose upper end 29 rests against any suitable support 30 whereby the drill may be followed up and forced into the work b as it is being rotated through the reciprocating action of the operating handle.

A feature of my improved construction is that the operating handle is retained in the keeper by means ot' a pivot pin or bolt 14.-, which may be readily removed and the handle reversed side for side so that the limit pin 20 instead ot extending upward to loosely engage the notch 18 of the ear 11 will extend down into the notch 19 of the ear 12 and the cam portion 81 will be reversed so that a slight relative reciprocating action of the lever will cause the cam end to engage the friction surface of ring 22 and rotate the operating member in they opposite direction.

Another and essential feature in the construction of this invention is that the point of contact of the cam with its friction surface is substantially on a line between the pivoting center and the center of the operating member, whereby the very strongest and most effective bite is obtained.

By this construction of friction wrench the operating member' may be attached to a nut, bolt, drill, or other device desired to be acted upon and rotated in a very narrow space by short vibrations of the wrench handle when desired, and then by a slight adjustment of the mechanism the direction of rotation of the operating member may be reversed.

I claim:

1. A wrench comprising a keeper provided vvith spaced apart ears eachof which is provided with a notch in its end to form an abutment, a member rotatably supported by said keeper and provided with a friction surface, a reversible operating lever pivotally mounted between said ears and having a cam-shaped end to engage said friction surface, and a stop pin projecting from one face of said lever and reversible with the latter to cooperate with either of said abutments to limit relative movement of said handle and keeper.

2. A wrench comprising a keeper provided with notches in its edge to form spaced apart oppositely disposed abutments, a ring rotatably supported by said keeper and provided with a friction surface, a reversible operating lever pivotally connected to said keeper and having a cam-shaped end to engage said friction surface, and a stop pin projecting from one face of the said lever, and reversible with the latter to coperate with either of said abutments to limit relative movement of said handle and said member.

3. A wrench comprising a keeper constructed in the form of a ring having a pair of spaced apart laterally extending notched ears, a work operating member rotatably mounted in said keeper said member being provided with a friction surface, an operating lever having a cam-shaped end portion to co-act with said friction surface to'rotate the operating member when said lever is oscillated, said lever being pivotally mounted to be readily reversed side for side in the space between said ears and a stop pin on said lever loosely engaging one ofsaid notches in said ears whereby the action of the wrench may be readily reversed upon a further movement of said lever.

In testimony whereof l affix my signature in presence of two witnesses.

FRED R. ALLEN.

Witnesses:

HOWARD E. BARLow, E. I. OGDEN.

Copie: of this patent may beobtained for ve cents each, by addressing the/Commissioner of Patents. Washington. D. G. 

